but first, since office, the obama administration has made reforming how -- a top priority, and so far, experts say, those efforts have helped save billions of dollars a year. still, in unveiling the budget plans earlier this year can the pentagon said that it would have to save a whopping $60 billion from efficiencies, if it's to afford the key priorities in an era of declining resources what has the pentagon done so far? and how do you ring efficiency from an organize as diverse and far flunk as the defendant department? joining us is david wennergren, the department's assistant deputy chief management officer. sir, welcome to the program. >> thank you. >> so your office was created co help drive the efficiencies across the department. and the goal is to save $60 billion overall. how do you do that? is it by making minor changes to just about everything, for example, legacy programs? is it through sweeping major reforms? is it eliminating work? what is the strategic approach you guys are taking to save money? >> it takes a little bit of all those things. it's a big organization, 3.5